hindsight-postgresql-projections

PostgreSQL-based projection system for building read models from event streams.

Projections use PostgreSQL for state management and execution, but can subscribe to events from ANY Hindsight event store backend (Memory, Filesystem, or PostgreSQL).

This enables flexible deployment patterns: - Testing: Memory store + PostgreSQL projections (fast!) - Single-node: Filesystem store + PostgreSQL projections - Production: PostgreSQL store + PostgreSQL projections